Tire-stripping device



Oct. 1,2 ,1926. 1,603,231

R. BROADBENT l TIRE TRIPPING DEVICE Filed July 23, 1925 2 sheets-sheet 1 Oct.' 12 1926..

R. BROADBENT 'ILREv STRIPPING DEVICE Filed July 25, 1925 2 Sheets-Sheet 2' @ffm Patented Get.' 12, 1925. i

fno? ascenseur; orl HAMILTON; ouranio cananiignssieivonfro Tirnrmns'roiin TIRE AND nnsnnnjcoiaraivxfor AKRON, omda conifoiaa'rion or oiiizo.v

` `TIRE- sra'Irpina DEVICE. v

' fappiieation inea Juiyrze, reas.'-v seriai 116.653,'179..

- This invention'rel'ates vtoyapparatus for stripping tires from cores lon which they havebeeneither built orvulcanized. .c

Intlie manufacture ofpneumatic tires,

the casingis formedA by superimposingr a plurality'of *fabric and-.rubber plies. upon a metallic core whichpis usualiy coated with cement to causethe innerply to cling thereto.` After thervulcanizingoperation, yduring which the tire has been molded tofinal form by heat and pressure, it is necessary to remove the tire from the 'coi-e, an Voperation rendered extremely difficult by the V -v shape of the mold body over which the.

l5 beads 'of the tire mustbe drawn, and aug,- mented bythe grippingaction of the cement upon the inner ply; y A broad feature of this present invention consists in a novelorganization and arrange-` ment ofgmechanism to loosen the tire cas-ing fronithe? coreiand strip it therefrom in a simple 'andreflicient' manner, Vrequiring the Y expenditure Aof only asmall amount'of mann 1 *ual laborandavoiding any injury to the casing.'V f

. The various features of-` my inventionwilt be best understood from a descriptionof one@ the/axis for a pressure yand guide roll 38 embodiment thereof selectedto illustrate 'the -same,' it being c understood,- 4however,l that, Y `my invention is not limited to such selected'` embodiment and doesvnot restrict the inven- 1 tion'eXcept within theA limits ofthe claims attached hereto 'I In" the drawings:

ratus illustrating a core and tire in operative position; j y I Figure 2 is a plan view illustrating the 'Figure V3 is a .view 'similar Ato Figure 2 showinggthe final voropen position of 'the loosening member; c, 1

, vFigure 4 is a cross-sectionV on, the line by ascrew 60.

4 4 ofFigure 2; andv `E`i-gure 5 is Va detail of one of the loosenenai'of which ist bracket io suitably Shaped Figure 1 is a side elevation ofthe appa-v initial position of the tire removing tongs 40' i and constructed to support the various parts ofthe stripping device.` The bracket 10 is received in a vertical groove' inthe stand-v ard vand is Asecured Ythereto by bolts 12 eX! tending through i elongated slotsiln the* G0 bracket.` Below the bracketthe standard isy provided with an'intergral lug 14 havingga` n threaded aperture therein through whiclian adjustment screw 16. extends to bear upon the bottom face of the bracket 'and by vmeans of vwhich the desired vvertical position of the bracket may bev secured. Y 1 The bracket 10 is provided with spacedl ears 18 between which are received bearing lugs 20 of a swinging frame 22, va bolt l24 extending through `the ears and lugs to hold the frame in position and'abo'ut which the Vframe lis free to pivot fin a horizontal plane.

adapted ton engage `the tread surface of the tire.A The ,stud 32 extends above the top of the-frame 28 'and affords a pivotfor ,tongs` 40 consistingof the crossed lever arms 42 and 44. The lever arm 42 is'in two sections, 46 .and v48, connected together by a strap 50, 1the arrangement allowing the twoY lever 90 arms to Voperate in the [same horizontaly Plane.` Y l The 4'forward endof each arm has an inwardly extending portionv 52 terminating in a rearwardly bent 'p tirek loosening member 54. The loosening member j isv preferably.

vvprovided with a,l reduced portion 56 :upon

which fan anti-friction roller 58 is secured Upon the opposite .from the tire loosening rollersare handlesV 62 as a convenient means for Vactuating the tongs. p -f v In the use of the device, the core and tire ings of the frames22 and 28 will allow the device to assume proper position with rela- 110 y l ends yof the lever arms tion to the tire regardless of the size of the latter. The tire loosening and stripping rollers 58 being separated a distance sulficient to receive the tire therebetween, the lstripping device is moved into operative position, the engagement of the roller With the tread of the tire arresting the forward movement of the device and centering it with relation to the core. The stripping rollers are then brought into engagement with the beads of the tire .by operating the handles 62, the inclination of the rollers be-V ing suoli as to enable them to pry between the beads of the tire and the cere. By a combined 4pulling and separating movement of the rollers, the tire is completely loosened from the core at all points in the manner clearly illustrated in Figure 3. After the tire has been loosened in the yabove manner, a movement of the tongs t() transversely of the core Will strip the tire therefrom, al-

though, generally, the latter has been soV loosened and stretched as to be easily removable by hand, if desired.

Having deseribed'my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. Apparatus for stripping tires from cores having, in combination, aeore support, pivotally mounted rollers for engaging the core, tire engaging meansto locate tlie'loosening means in predetermined position relative to the beads of the tire, and means for causing the loosening means to move transversely and radially of the tire` to strip the tire from the core. Y

3. An apparatus for stripping tires from cores having, in combination, tire gripping tongs for pryinga tire from'the core, said tongs being mounted for swinging move ment in a horizontal plane, and means for operating the tongs.

4. An apparatus for stripping tires from' cores having, .in combination, a pivoted frame, aV guide roll carried by said 'frame for engaging the tread of thel tire, a -pair 7 of arms mounted on said frame above the roll, said arms extending on opposite sides of the core, andV tire engaging rollers upon/ the ends of the said arms adapted to loosen the tire from the core.

5. An apparatus for stripping tires from cores having, in combination, a core support, apivotedirame, a second frame pivotedto the i'ii'st 1rame, a tire stripping deviceV mounted upon the second frame, and means Y for eentralizing the stripping device in `operative position with respect to the' core.

(l. An apparatus for stripping tires 'from' cores having, in combination, a' swinging support, a pair of crossed arms pivoted toV said support and adapted to Operatein 'the same plane, operating means yon jones end ot sai-d arms, andv tire loosening means Aon the other end of the arms arranged on opposite sides of the cor-e, the said support being mounted for universalvmoveinent in a horizontal plane to locate the tire loosening means in'tire engaging position and facilitate the removal of the tire. l

' ROY VBROADBENT; 

